Dormer R510 Solid Carbide Tin CDX Jobber Drill 3.9mm Pack of 1

... - Manufacturers part numbers: R51039|R5103.9

• Drill bit conforms to DIN 338 standard
• Self-centering 130-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging
• Titanium nitride (TiN) coating offers increased wear resistance, extended tool life, and higher hardness on ferrous and nonmetallic materials
• Solid carbide drills produce close-tolerance holes in hard materials, and have a longer tool life at higher speeds than cobalt and high-speed steel (HSS)
• Jobber length drill bit has a midrange drilling depth of 4 times its diameter for general-purpose applications